Adjustable concrete form



' C. F. MOORE ADJUSTABLE CONCRETE FORM Filed Oct. 6, 1922 3 Sheets flhea' a New 1" 119235 c. F. MQOMET ADJUSTABLE CONCRETE FORM Filed 00%,. 6, 1922 3 Sheets-Sheet 5 plication Serial No. 411,092,

.Patented Nov. 13, 1923.

ADJUSTABLE CONCRETE FORM.

Application filed October 6, 1922.

- To all whom it may concern:

a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Adjustable Concrete Forms, of which the following is a specification.

This invention relates to forms used to support a concrete column while the coni crete is poured, and subsequently during the period required for the concrete to set. suifi ciently to become selfsustaining. The present invention involves an improvement on the invention described in my copending apfiled September is, 1920.

In my prior application above identified, I have disclosed a sheet metal-form which is adjustable for use in the making of concrete columns of various cross sectional dimensions. It is a common practice, as is well understood bythose skilled in this art, to locate a column under a beam or under a junction of two or more beams, and this practice necessitates what is known in this art as a beam cut in the upper part of the form which supports the column. That is, the upper part of the form is cut out at each point where it is necessary to accommodate a beam.

.The present invention has for its chief object to devise a form which can be adjusted to provide a beam opening or beam cut. The invention lso aimsto devise a form of this character which can be used in connection with the form disclosed in my application above identified.

The. nature of the invention will be readily understood from the following de- 1 scription when read in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.

In the drawings,

Figure'l is a horizontal cross sectional view of a concrete column. supported in a firm of the character shown in my appliionabove designated, the plane of cross section being indicated by the line Fig. 3

Fig. 2 is a plan view of 'a portion of a fioor of a building showing a column and three beams radiating therefrom;

Fig. 3 is a cross sectional view on substantially the line 3'3, Fig. 2, showing the lar cross section- Serial No. 592,729.

upper part of a form adjusted to accommodate the beam;

Fig. 4 is a similar cross sectional view on substantially the line H, Fig. 2; and

Fig. 5 is a diagrammatic cross sectional view of the parts at one side of the column, the plane of cross section being indicated by the line 5-5, Fig. 4.

Referring first to F 1, the form there shown comprises four sections arranged in two pairs, the members 0i each pair being duplicates of the corresponding members of the other pair. Each section supports one corner of the column and the sections are designated at A, B, C and D, respectively. Section A comprises two plates at and a which lie at right angles to each other and are secured rigidly together at their adjacent edges by being riveted to an angular strip 2. These two plates define one corner of the'column. Each of the other sections includes similar plates secured together in a like manner, the plates of the section B being designated at Z) and 6, those of section C at 0 and c, and those of section D at (Z and (1, respectively. Each pair of plates defines one corner of the column, and the corresponding plates of similar pairs are supported in overlapping relationship and support the tour vertical faces of the column. Each plate preferably consists of sheet metal of suitable thickness. It is contemplated that rolled steel or iron plates, galvanized if desired, will be used and each plate for most purposes need not be over one-sixteenth of an inch in thickness.

For the purpose of supporting these plates in their operative positions, each of the sections above mentioned includes. trusslike frame members which are secured together to encircle the plates, and several of these encircling frames are provided on each form. the several frames being spaced apart vertically oi the :lorni at the required intervals to give the necessary rigidity to the trains and prevent the plates from buckling.

The trans for the section A. comprises two parallel .lIIGlrlliC bars 3 and 4 of anguspaced apart but secured rigidly together by cross pieces 5, 6 and 7, and if desired also by diagonal members. The frame part formed by these members lies parallel to the plate a and supports this plate. This frame section also includes three other members orb ars lying parallel-to lilf) the plate o, these members being designated at S, 9 and 10, respectively, and the two latter members being of angular cross section. Cross pieces 11, 12 and 13 riveted to these parts secure them in the desired spaced'relationship, and the downwardly projecting webs of the angular pieces a and 13 are secured together by bolts.

For the purpose of securing this section to the corner plates (0 and (1., the plate (a, and the corner angle piece 2 where these parts projectbeyond the plate a, have a hole punched therein to receive a lug or can tension 16 of the member (3, and a tapered key or wedge 17 is driven through the slot in this tongue and cooperates with the face of the part 2 to secure this "frame section firmly to the plates (6 and o.

The coniesponding part of the section B includes the same frame members as that of the section A. but these members are rcversed and accordingly the parts oi this and D.

frame'section are designated the same numerals as those used for the corresponding parts oii section A except that these numerals are primed. The section (.7 is an exact duplicate of the section. A, while the section D is a duplicate of the section B.

The sections are adjustably secured together in a manner which enables them to be set up relatively to each other in various relationships "depending upon the desired cross sectional dimensions of the column to be made. For this purpose the angle members 3 and at of the section A overlap the corresponding membersZ-i and i of the section 1) and these members are secured together by bolts 2O, 21 and which enter holes formed in these parts. It will be seen that each of the parts 3, 3, 4c and l are provided with a series of holes spaced apart at regular intervals so that a great range oi adjustment is provided for the sections A and D toward and from each other.

The sections A and B are similarly connected together by bolts 24. That is. the parts 8 and 845) and 9, 1.0 and 10' overlap and are n'ovided with holes spaced similarly to those in the parts 3, 3 and at, and the bolts 24 secure these parts together. this construction providing for a variation in the distance between the sections A and B similar to that provided between the sections A and D. The same provision is made for securing the section C to the sections l The construction so far described is like thatshown and described in my copending application above designated, and this con struction is, utilized to support the greater part of the column. Fig. Bellows an ar- 1'airgeinentwhich I have devised for providing abeam cut at the upper end of this co'lunin' In this! arrangement a series of narrow plates, designated by the numerals tically ot the main platesinto different po-.

sitions of longitudinal relationship to each other.

As shown in Fig. 3, the plates and 36 have been adjusted into lower positions than .the. other narrow plates, thus forming an opening between the adjacent edges of the plates'tli and 37 to accomnio date the beam E which is joined to the floor slab F. The outermost plates 30 and 40 are secured to the opposite angle strips 22 in the same manner that the main plates (5 and c are secured thereto.

It the other faces of the column are not intersected by beams they will be supported by. plates arranged as shown in Fi 1, the narrow plates being used only where it is necessary to provide for a beam opening.

The upper part of the form preferably is encircled by a truss-like frame exactly like that used to support the form at lower points so that all theplat-es are rigidly held in their operatix'e positions while the concrete is being poured and subsequently while it sets.

It will be noted that some of the plates, as for instance, 81. 32 and 39, are wider than the other plates of the narrow set. This variation in width enables the workmen to rearrange the plates. as may be desired to make the beam of substantially any desired cross sectional dimensions. and to make it in any part ofthe upper edge of the support.

Figs. 4 and 5 show a somewhat difi'erent arrangement of plates adjusted fouthe location oi? the beam 'G near the left-hand side of the column. This plate arrangement will be obvious from an inspection oi? Figs. 4 and In both Figs/3 and 4: it has been assumed for convenience that the narrow plates are used in the upper part of a section constructed like the section at the left-hand and punch the holes in them. They can be used over and over again. thus obviatingthe waste of lumber which is inevitable when wooden forms aroused. as is now the common "commercialpractice. Furthermore,

lie

after the form has been taken downthe parts can be packed in a small space for shipment or storage.

lVhile I have herein shown and described the best embodiment of my invention of overlapping relationship and enabling them to be adjusted to provide in said support a beam opening adjustable in dimensions both vertically and laterally.

2. In an adjustable form for concrete columns, a series of plates forming a support for one vertical face of a column, and means for securing said plates together in overlapping relationship and enabling them to be adjusted to provide a beam opening at any desired location in the upper end of said support.

3. In an adjustable form for concrete columns, a series of plates forming a support for one vertical face of a column, means for securing said plates together in overlapping relationship and enabling them to be adjusted to provide a beam opening in the upper end of said support, additional plates supporting the other faces of the column, and a trusslike frame encircling all of said plates and supporting them in operative relationship to each other.

4. In a form for concrete columns, an adjustable support for one face of a column comprising a series of narrow plates, and means for securing said plates together with their edges overlapping in various positions of relationship longitudinally of each other.

5. In a form for concrete columns, an adjustable support for one face of a column comprising a series of narrow plates, having holes in their marginal portions, and bolts.

located in certain of said holes and securing the plates together with their edges overlapping, said holes being positioned to enable the plates to be secured in various positions of relationship longitudinally of each other.

6. In a form for concrete columns, an adjustable support for one face of a column comprising a pair of main plates supporting the lower part of said face, a series of narrower plates supporting the upper portion of said face, and means for securing said plates in their operative positions and enabling the narrow plates to be adjusted to provide a beam opening in the upper part of said support.

7. In a form for concrete columns, an adjustable support for one face of a column comprising a pair of main plates, and a series of narrow plates secured to the upper portions of said main plates, said narrow plates being adjustable vertically of the main plates, whereby the narrow plates may be adjusted to provide a beam opening in the upper end of said support.

8. In an adjustable form for concrete columns, a series of narrow plates forming a support for the upper part of the vertical face of a column, main plates supporting said vertical face below said narrow plates, means whereby said main lates may be adjusted to vary the width ofsaid face, and means for securing said narrow plates to each other and to said main plates and enabling the narrow plates to be adjusted vert-ically to provide a beam opening in said support.

9. In an adjustable form for concrete columns, a series of narrow plates forming a support for the upper part of the vertical face of a column, a pair of main plates cooperating to support said face below said narrow plates. the margins of said narrow plates being perforated and said main plates being perforated, and bolts securing said narrow plates together and securing them to said main plates, said perforations being spaced to enable the main plates to be adjusted to vary the width of said face and enable said narrow plates to be adjusted vertically of the main plates.

10. In an adjustable form for concrete columns, a series of narrow plates forming a support for the upper part of the vertical face of a column, said plates varying in width, main plates supporting said vertical face below said narrow plates. means whereby said mainplates may be adjusted to vary the width of said face. and means for secur ing said narrow plates to each other and to said main plates and enabling the narrow plates to be adjusted vertically to provide a beam opening in said support.

CHARLES F. lllOO'BE.

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